In 1950, it started manufacturing bus and truck bodies mounted on leading US brands, being International Harvester, Ford, Chevrolet, and the Dodge Chassis.

Also, in the 1950s, its sister company, the Emcos Development & Supply Co., Inc. was the leading distributor of International Harvester Macleod, Inc. in Northern Luzon marketing bus chassis, trucks, tractors, agricultural and farm implements.

Volvo agreed to transfer its technology in the assembly of its articulated and bi-articulated bus chassis to Philtrak and Del Monte jointly constituting a tri-partite agreement among the aforestated parties.

Together, they intend to introduce the system not only in Metro Manila but all over the Philippines where the need arises especially on traffic clogged areas.

It is also responsible in re-activating the sale of Isuzu buses in the Philippines when the combined resources of General Motors Corporation, the Yutivo group and its local subsidiary folded up in the middle 1980s by importing directly from the factory of Japan's Isuzu and supplying different bus operators.